A project is a way to accomplish a goal within a deadline. It differs from everyday work or life because it has a beginning (the moment you start working on a plan) and an end (the moment you achieve the results). Once you’ve reached the results, your project ends. After that, you continue with your life as usual, and you will probably start another project soon.
So, now work on creating your project charter. I am sure you will come up with a complete picture of your transformational journey. You might even come across some surprises, something you did not expect when first you defined your goal. And that is not a problem; it is a good thing as it is better to spot it now and not later when you are deep into implementation. After that, it will be too late to change your scope without affecting your delivery.
All this might seem like a lot of effort to you. But I assure you two things: in the first place, all the work you do upfront in defining and organising is time well spent as later when you implement you are going to move so much faster and see results that last. Second, you are learning a process, a way of working and carrying out reliable changes. This means that you will be able to make even complex projects efficiently.